SkinCloning, OrganismNuclear Transfer TechniquesKeratinocytesClone CellsUltraviolet RaysMelanocytesFibroblastsEpidermisCloning, MolecularSkin NeoplasmsCells, CulturedSkin AgingDose-Response Relationship, RadiationSkin Physiological PhenomenaSkin, ArtificialDermisSkin DiseasesSkin PigmentationBase SequenceMolecular Sequence DataSkin AbsorptionAmino Acid SequenceSunlightMice, HairlessCysteamineMelaninsWound HealingRNA, MessengerSkin TestsCell LineDNA, ComplementaryAdministration, TopicalSequence Homology, Amino AcidPyrimidine DimersGene ExpressionDNA DamageOxidative StressErythemaDNAPhotosensitizing AgentsMelanomaKeratinsCell Line, Transformed